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MX2008005789A - One way valve assembly. - Google Patents

One way valve assembly.

Info

Publication number
MX2008005789A
MX2008005789A MX2008005789A MX2008005789A MX2008005789A MX 2008005789 A MX2008005789 A MX 2008005789A MX 2008005789 A MX2008005789 A MX 2008005789A MX 2008005789 A MX2008005789 A MX 2008005789A MX 2008005789 A MX2008005789 A MX 2008005789A
Authority
MX
Mexico
Prior art keywords
valve assembly
flowable substance
continuous sealing
cover
source
Prior art date
Application number
MX2008005789A
Other languages
Spanish (es)
Inventor
Stewart Swiss
Greg Pardes
Original Assignee
Reseal Internat Ltd Partnership
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Reseal Internat Ltd Partnership filed Critical Reseal Internat Ltd Partnership
Publication of MX2008005789A publication Critical patent/MX2008005789A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/205—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure the valve being formed by a tubular flexible sleeve surrounding a rod-like element provided with at least one radial passageway which is normally closed by the sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/44—Closures
    • B65D35/46—Closures with valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement
    • Y10T137/7889—Sleeve

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Check Valves (AREA)
  • Closures For Containers (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

A one way valve assembly flows a sterile flowable substance from a source to an outlet orifice and prevents any backflow of contaminants through the one way valve assembly when the flowable substance ceases to flow. The valve assembly includes an elastomeric membrane which aids in preventing any backflow of contaminants when dispensing of the flowable substance is stopped.

Description

UNIDIRECTIONAL VALVE ASSEMBLY FIELD OF THE INVENTION The present invention is directed to a unidirectional valve assembly for dispensing a sterile flowable substance while preventing any backflow of contaminants entering the source of the flowable substance. The valve assembly includes a valve body enclosed by a flexible pressure-displaceable element or elastomeric element to effect the passage of the flowable substance to a controllable outlet while preventing any backflow to the source of the flowable substance after dispensing individual portions of the flowable substance.
BACKGROUND OF THE INVENTION In the past, in order to keep the flowable substance free from contaminants, the preservatives have been mixed into the flowable substance in the container from which they are dispensed. The use of preservatives is an added expense and tends to limit the effectiveness of the flowable substance, particularly when the flowable substance is a pharmaceutical product such as an eye care solution or is a food product. Another consideration is the capacity of the assembly of valve to supply a selected quantity at the exit without causing any damage to the user, such as when applying an eye care solution directly on the eye. In recent years, flexible membranes have been used to control the flow of the flowable substance at the outlet of the valve assembly while preventing any backflow to the source of the flowable substance, however, it has been difficult to provide an effective process for manufacturing the valve assembly and limit its costs.
BRIEF DESCRIPTION OF THE INVENTION Therefore, the primary object of the present invention is to provide a valve assembly for transporting a flowable substance from a closed source, such as an oppressive container while preventing any backflow of contaminants through assembly. of valve at the source of the flowable substance after a portion of the substance has been dispensed. The collapsible container may be a bellows type, a tube, an inner bag or other type of squeezable shape designed to dispense virtually all of its contents. The container has a normally closed controllable exit surface to dispense a flow from the Flowable substance outside the valve assembly. The container is in sealed contact with the valve assembly so that its contents do not receive any contaminants when the flowable substance is dispensed. The dispensing of the flowable substance is effected by applying pressure to the container, so that its contents flow into the valve assembly. The contents may be a pharmaceutical product, such as a solution to the care of the eyes or another substance which must be kept free of contaminants during the dispensing of a multiple number of dispensed quantities. Other flowable substances may be food products or beverages, cosmetics, or other flowable substances to be kept free of contaminants during the dispensing operation. The container can be protected by a housing so that the pressure is not accidentally applied. The valve assembly is a structure that extends axially open to the container of the flowable substance. The valve assembly is formed of an internal core that extends axially, open to the container and formed of a rigid plastic component. The interior of the core has a passage to receive the flowable substance from the container. At least a portion extending from the passage provides an opening for transporting the flowable substance out of the inner core.
Hermetically attached to the inner core is an axially extending flexible membrane that covers the outlet end of the port through the inner core. The flexible membrane moves outward from the inner core when the flowable substance is pressurized and passes through the port and flows to the outlet end of the flexible membrane. Laterally out of the flexible membrane, there is a final valve cover that ends in the controllable outlet hole. The pressurized flowable substance travels between the flexible membrane radially outwardly extending and the outer surface of the inner core and flows to the controllable outlet orifice. The exit orifice may provide a limited amount of the flowable substance to be dispensed. An upper cover covers the outside of the valve cover to protect the valve assembly during storage and prevent accidental dispensing. A collar attaches the valve assembly to the container and provides a sealed arrangement that prevents any flow of contaminants into the container. The various characteristics of novelty which characterize the invention are indicated with particularity in the claims appended to, and forming a part of this description. For a better understanding of invention, its operation, advantages and specific objects achieved by its use, should have reference to the accompanying figures and descriptive matter in which they are illustrated and describe a preferred embodiment of the invention.
BRIEF DESCRIPTION OF THE FIGURES Figure 1 is an axially extending view of a unidirectional valve assembly that includes the present invention; Figure 2 is a separate view of the assembly of a unidirectional valve shown in Figure 1; Figure 3A is an enlarged axially extending partial view of the unidirectional valve assembly in the rest position; Figure 3B is a partial similar view to Figure 3a, however, with the unidirectional valve assembly in the dispensing position; and Figure 4 is an enlarged axially extending partial view of the dispensing end of the unidirectional valve assembly shown in Figure 3b.
DETAILED DESCRIPTION OF THE INVENTION As shown in Figure 1, the unidirectional valve assembly 1 is composed of a container of bellows or source 2 which retains a sterile flowable substance, a valve assembly 3 for transporting the flowable substance from the container 2 to an outlet when pressure is applied to the container 2 and an upper cover 15 covering the valve assembly 3 to prevent it from entering Contamination to valve assembly 3 during storage. The bellows container 2 is depressed when pressure is applied to the container, however, other containers may be used such as a tube or an internal bag in a container, which allows the dispensing of multiple doses of the flowable substance without contamination enter the container after the dispensing procedure. The flowable substance can be a pharmaceutical product, such as an eye care solution, a food product, such as products or juices, and a cosmetic, such as a solution for skin care or toiletries, and liquid vitamins, which are intended to be kept free of contaminants from the ambient atmosphere. The bellows container or source 2 is enclosed laterally by an axially extending housing 6, to provide better ergonomic control during dispensing. A slot 7 extending axially in the housing 6, allows a user to gain access to a actuator 2a of the container since the flowable substance is compressed. A collar 8 connects the valve body 3 to the container 2 providing a graduated connection so that the contaminants can not pass into the container 2. The valve assembly 3 has an axially extending inner core bearing 10 that abuts against the opening of the container 2 so that the flow of the container enters the axially extending blind passage 11 in the inner core. The passage 11 extends over a main portion of the axial length of the inner core. At about half the length of the passageway 11, the inner core has at least one port 12 extending transversely of the passage axis of the passage surface to the outer surface of the inner core 10. The inner core 10 is formed of a rigid plastic material and ends inward of the outlet end of the valve body. A flexible membrane 13, such as an elastomeric membrane, fits tightly over the outer surface of the inner core and extends from the opening in the container 2 to the opposite end of the inner core 10. As can be seen in Figures 3A, 3B and 4, the thickness of the membrane is variable along its axial length and in The region of the outlet end of the inner core has an uninterrupted continuous annular band extending axially, considerably thicker than the rest of the flexible membrane 13, that is, the band is not separated in the axial direction by axially extending cuts. . At its end adjacent to the container opening, the flexible membrane 13 has an eyebrow that extends outwardly against a protrusion in the inner core that is located in the opening of the container. An axially extending valve cover 14 encloses the flexible membrane 13 and as shown in the rest position in Figure 3A, is radially spaced outwardly from the outer surface of the flexible membrane. The end of the valve cover 14 adjacent to the container 2, has a radially outwardly extending eyebrow 14a that abuts against the protrusion at the end of the flexible membrane effecting the seal for the valve body in the opening from of the container 2. The valve cover 14 is formed of an inner layer of an elastomeric material extending axially from its eyebrow 14a a, and over the outlet end of the valve body 3. The elastomeric material forms a soft cover 7 on the output end of the increased thickness, which is particularly advantageous when the Valve assembly is used to dispense a solution for eye care. Such a soft cover 7, prevents any damage to the eye. The soft cover 7 has an outlet hole 7a for dispensing the flowable substance. The outlet orifice is closed in the rest position of the unidirectional valve assembly, however, when the flowable substance is being dispensed and exits the outlet end of the flexible membrane, it flows radially into the outlet orifice which then opens allowing the substance to flow out of the valve assembly. When the flowable substance is dispensed and the pressure at the source is removed from the outlet orifice 7a, it is closed by blocking any backflow in the valve assembly. Selectively dimensioning the exit hole 7a, a drop-like amount of the flowable substance can be dispensed, for example, if an eye care solution is being dispensed. If a larger quantity of the flowable substance is being dispensed to the outlet orifice 7a, it can be formed to dispense a larger amount of the flowable substance. The outer hole 7a can be formed to provide a spray or a jet of the flowable substance. An upper layer 15 is placed on the valve assembly when it is not in use, protecting the contact with environmental contaminants and for unintentional dispensing. When the flowable substance is dispensed, the top cover 15 is removed and pressure is applied to the actuator 2a of the container, so that a quantity of the flowable substance passes out of the container in the passage 11 in the inner core 10. The substance flows into the container. through at least one port 12, and expands the flexible membrane 13 radially outwardly and flows towards the outlet end of the flexible membrane where it leaves the flexible membrane radially inward at the outlet hole 7a in the cover and is dispensed . By releasing the pressure in the actuator 2a of the container, the dispensing operation is completed and the flexible membrane 13 returns inward to make contact with the outer surface of the inner core 10. The inward movement of the flexible membrane starts at its outlet end due to its increased thickness, and provides gradual contact with the outer surface of the inner core, returning any flowable substance through the ports back into the container, thereby, contaminants can not enter the container. The dispensing of individual portions of the flowable substance may continue until the container is almost completely emptied.
As mentioned, a variety of pharmaceuticals, cosmetics, food products and other flowable materials can be dispensed where it is important to keep them free of contaminants from the ambient atmosphere. The flow characteristics of the material to be dispensed determine the type and dimension of the valve body. The material that forms the outlet orifice 7a, does not absorb the flowable substance, any substance that enters the outlet orifice is expelled and does not return inwardly to the space between the inner core and the flexible membrane.

Claims (20)

  1. CLAIMS 1. A continuously sealable unidirectional valve assembly and delivery system for dispensing a flowable substance, characterized in that it comprises: a source for storage of the flowable substance, the source has an opening; a valve assembly coupled to the opening of the source, said valve assembly includes (i) an inner core having an inlet opening for receiving the flowable substance in a passage and at least one port for opening the passageway; (ii) a flexible tubular membrane having a first end and a second end, the first end being thicker than the second end, wherein the flexible tubular membrane is fitted on an outer surface of the inner core and when the flowable substance is placed under pressure, the flowable substance exits through at least one port opening and expands said membrane outwardly from the outer surface of the inner core so that the flowable substance exits the first end of the tubular flexible membrane; a cover enclosing the flexible membrane and having an outlet hole for dispensing the flowable substance from the valve assembly when pressure is applied to the flowable substance, and where the pressure in the flowable substance is released, the first end of the membrane Tubular moves back to make tight fitting contact with the surface of the inner core before the rest of the tubular flexible membrane is moved back to make sealing contact with the outer surface of the inner core before the rest of the flexible tubular membrane moves back to make sealing contact with the outer surface of said inner core.
  2. 2. The unidirectional continuous sealing valve assembly and supply system according to claim 1, characterized in that the tubular flexible membrane has an uninterrupted continuous band extending axially at the first end of the flexible tubular membrane adjacent to the exit orifice in the cover and that completely encloses the core.
  3. 3. The continuous sealing unidirectional valve assembly and supply system according to claim 1, characterized in that said membrane has a projection extending radially outwardly at the second end thereof, adjacent to the inner core passage, and the cover it also has a projection extending radially outward which presses the projection into the membrane to make fluid tight contact with a projection extending radially outwardly in the passage opening inside the inner core.
  4. 4. Continuously sealable unidirectional valve assembly and compliance supply system with claim 3, characterized in that a collar and a connector element at the source ensure the valve assembly to the source.
  5. The unidirectional continuous sealing valve assembly and supply system according to claim 4, characterized in that the connecting element is a threaded screw which is mated to the collar.
  6. 6. The unidirectional continuous sealing valve assembly and supply system according to claim 5, characterized in that the collar and the connector element in the source perform a positive closure preventing the opening of the source.
  7. The unidirectional continuous sealing valve assembly and delivery system according to claim 1, characterized in that the outlet orifice in the cover is arranged so that it can dispense a selected quantity of the flowable substance.
  8. 8. The unidirectional continuous sealing valve assembly and supply system according to claim 1, characterized in that the exit orifice in the cover is formed of a soft material.
  9. 9. The unidirectional continuous sealing valve assembly and delivery system according to claim 1, characterized in that the exit orifice in the cover is formed of a flexible material.
  10. 10. The unidirectional continuous sealing valve assembly and supply system according to claim 1, characterized in that the cover is formed of a flexible member that extends axially internally laterally enclosed by a rigid plastic cover extending axially.
  11. 11. The unidirectional continuous sealing valve assembly and supply system according to claim 1, characterized in that a top cover is arranged to fit over and form a seal with said valve assembly, sufficient to prevent external contamination from coming into contact with the valve assembly during storage.
  12. 12. The unidirectional continuous sealing valve assembly and supply system according to claim 1, characterized in that at least two ports extend from the passage through the inner core and into the inner surface of the flexible membrane.
  13. 13. The unidirectional continuous sealing valve assembly and delivery system according to claim 1, characterized in that the source comprises an oppressive reservoir reducible in volume in proportion as the flowable substance is dispensed from the oppressive reservoir.
  14. 14. The unidirectional valve assembly continuously sealing and supply system according to claim 13, characterized in that said oppressible reservoir is one of a bellows, a tube and an internal bag.
  15. 15. The unidirectional continuous sealing valve assembly and supply system according to claim 1, characterized in that an axially extending housing laterally encloses the source.
  16. 16. The unidirectional continuous sealing valve assembly and delivery system according to claim 15, characterized in that the housing has a groove extending in the axial direction to apply dispensing pressure to an actuator of the oppressive reservoir.
  17. 17. The unidirectional continuous sealing valve assembly and delivery system according to claim 1, characterized in that the cover has a closed outlet orifice, which is opened to dispense the flowable substance from the cover when the dispensing pressure is applied. to the source.
  18. 18. The unidirectional continuous sealing valve assembly and delivery system according to claim 17, characterized in that the exit orifice in the cover is impermeable to the flowable substance and does not retain the flowable substance in the orifice of the valve. departure.
  19. 19. The unidirectional continuous sealing valve assembly and delivery system according to claim 1, characterized in that the source is filled with a product free of preservatives.
  20. 20. The unidirectional continuous sealing valve assembly and delivery system according to claim 19, characterized in that said preservative-free product is selected from pharmaceutical products, food products, cosmetic products and liquid vitamins.
MX2008005789A 2005-11-03 2006-10-24 One way valve assembly. MX2008005789A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/267,868 US7306129B2 (en) 2005-11-03 2005-11-03 One way valve assembly
PCT/US2006/041840 WO2007055922A2 (en) 2005-11-03 2006-10-24 One way valve assembly

Publications (1)

Publication Number Publication Date
MX2008005789A true MX2008005789A (en) 2008-09-09

Family

ID=37994938

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2008005789A MX2008005789A (en) 2005-11-03 2006-10-24 One way valve assembly.

Country Status (17)

Country Link
US (4) US7306129B2 (en)
EP (1) EP1948528B1 (en)
JP (1) JP5047183B2 (en)
KR (1) KR20080086862A (en)
CN (3) CN101405197B (en)
AU (1) AU2006312064A1 (en)
BR (1) BRPI0619659A2 (en)
CA (1) CA2628331C (en)
ES (1) ES2488411T3 (en)
IL (1) IL191212A (en)
MX (1) MX2008005789A (en)
NZ (1) NZ568646A (en)
RU (1) RU2430867C2 (en)
TW (1) TW200726492A (en)
UA (3) UA96582C2 (en)
WO (1) WO2007055922A2 (en)
ZA (3) ZA200804788B (en)

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